<template>
  <div class="xtx-cart-page">
    <div class="container">
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem>购物车</XtxBreadItem>
      </XtxBread>
      <div class="cart">
        <table>
          <thead>
          <tr>
            <!--vuex数据不允许直接修改，所以不能v-model双向数绑定-->
            <th width="120">
              <XtxCheckbox :modelValue="$store.getters['cart/isCheckAll']" @change="checkAll">全选</XtxCheckbox>
            </th>
            <th width="400">商品信息</th>
            <th width="220">单价</th>
            <th width="180">数量</th>
            <th width="180">小计</th>
            <th width="140">操作</th>
          </tr>
          </thead>
          <tbody>
          <tr v-if="$store.getters['cart/validList'].length===0">
            <td colspan="6">
              <CartNone/>
            </td>
          </tr>
          <!-- 有效商品 -->
          <tr v-for="goods in $store.getters['cart/validList']" :key="goods.id">
            <td>
              <!--既要传参又要拿到状态-->
              <XtxCheckbox @change="($event)=>checkOne(goods.skuId,$event)" :modelValue="goods.selected"/>
            </td>
            <td>
              <div class="goods">
                <RouterLink :to="`/product/${goods.id}`"><img :src="goods.picture" alt=""></RouterLink>
                <div>
                  <p class="name ellipsis">{{ goods.name }}</p>
                  <!-- 选择规格组件 -->
                  <!--goods.skuId表示旧的skuId，$event新的修改值-->
                  <CartSku @change="$event=>updateCartSku(goods.skuId,$event)" :skuId="goods.skuId"
                           :attrsText="goods.attrsText"/>
                </div>
              </div>
            </td>
            <td class="tc">
              <p>&yen;{{ goods.nowPrice }}</p>
              <p v-if="goods.price-goods.nowPrice>0">比加入时降价 <span class="red">&yen;{{
                  goods.price - goods.nowPrice
                }}</span></p>
            </td>
            <td class="tc">
              <XtxNumbox @change="$event=>updateCount(goods.skuId, $event)" :max="goods.stock"
                         :modelValue="goods.count"/>
            </td>
            <td class="tc"><p class="f16 red">&yen;{{ Math.round((goods.nowPrice * 100) * goods.count / 100) }}</p></td>
            <td class="tc">
              <p><a href="javascript:;">移入收藏夹</a></p>
              <p><a class="green" href="javascript:;" @click="deleteCart(goods.skuId)">删除</a></p>
              <p><a href="javascript:;">找相似</a></p>
            </td>
          </tr>
          </tbody>
          <!-- 无效商品 -->
          <tbody v-if="$store.getters[`cart/invalidList`].length">
          <tr>
            <td colspan="6"><h3 class="tit">失效商品</h3></td>
          </tr>
          <tr v-for="goods in $store.getters['cart/invalidList']" :key="goods.id">
            <td>
              <XtxCheckbox style="color:#eee;"/>
            </td>
            <td>
              <div class="goods">
                <RouterLink to="/"><img src="https://yanxuan-item.nosdn.127.net/13ab302f8f2c954d873f03be36f8fb03.png"
                                        alt=""></RouterLink>
                <div>
                  <p class="name ellipsis">{{ goods.name }}</p>
                  <CartSku :skuId="goods.skuId" :attrsText="goods.attrsText"/>
                </div>
              </div>
            </td>
            <td class="tc"><p>&yen;{{ goods.nowPrice }}</p></td>
            <td class="tc">{{ goods.count }}</td>
            <td class="tc"><p>&yen;{{ Math.round((goods.nowPrice * 100) * goods.count / 100) }}</p></td>
            <td class="tc">
              <p><a class="green" href="javascript:;" @click="deleteCart(goods.skuId)">删除</a></p>
              <p><a href="javascript:;">找相似</a></p>
            </td>
          </tr>
          </tbody>
        </table>
      </div>
      <!-- 操作栏 -->
      <div class="action">
        <div class="batch">
          <XtxCheckbox :modelValue="$store.getters['cart/isCheckAll']" @change="checkAll">全选</XtxCheckbox>
          <a href="javascript:;" @click="batchDeleteCart(false)">删除商品</a>
          <a href="javascript:;">移入收藏夹</a>
          <a href="javascript:;" @click="batchDeleteCart(true)">清空失效商品</a>
        </div>
        <div class="total">
          共 {{ $store.getters['cart/validTotal'] }} 件商品，已选择 {{ $store.getters['cart/selectedTotal'] }} 件，商品合计：
          <span class="red">¥{{ $store.getters['cart/selectedAmount'] }}</span>
          <XtxButton type="primary" @click="checkout">下单结算</XtxButton>
        </div>
      </div>
      <!-- 猜你喜欢 -->
      <GoodRelevant/>
    </div>
  </div>
</template>
<script>
import GoodRelevant from '@/views/goods/components/goods-relevant'
import CartNone from '@/views/cart/components/cart-none'
import { useStore } from 'vuex'
import Message from '@/components/library/Message'
import Confirm from '@/components/library/Confirm'
import CartSku from '@/views/cart/components/cart-sku'
import { useRouter } from 'vue-router'

export default {
  name: 'XtxCartPage',
  components: {
    CartSku,
    CartNone,
    GoodRelevant
  },
  setup () {
    const store = useStore()
    const router = useRouter()
    // 单选操作
    const checkOne = (skuId, selected) => {
      store.dispatch('cart/updateCart', {
        skuId,
        selected
      })
    }
    // 全选操作
    const checkAll = (selected) => {
      store.dispatch('cart/checkAllCart', selected)
    }
    // 删除操作
    const deleteCart = (skuId) => {
      Confirm({ text: '您是否确认删除？' }).then(() => {
        // 点击确认
        store.dispatch('cart/deleteCart', skuId).then(() => {
          Message({
            type: 'success',
            text: '删除成功'
          })
        })
      }).catch(e => {
        // 点击取消
      })
    }
    // 批量删除操作，也支持清空无效商品
    const batchDeleteCart = (isClear) => {
      // isClear为true表示删除失效商品
      Confirm({ text: `您是否确认删除${isClear ? '失效' : '选中'}商品？` }).then(() => {
        // 点击确认
        store.dispatch('cart/batchDeleteCart').then(() => {
          Message({
            type: 'success',
            text: '删除成功'
          })
        })
      }).catch(e => {
        // 点击取消
      })
    }
    // 修改数量
    const updateCount = (skuId, count) => {
      store.dispatch('cart/updateCart', {
        skuId,
        count
      })
    }
    // 修改规格
    const updateCartSku = (oldSkuId, newSku) => {
      store.dispatch('cart/updateCartSku', {
        oldSkuId,
        newSku
      })
    }
    // 下单结算
    const checkout = () => {
      // 1. 判断是否选中商品，且提示
      // 2. 弹出确认对话框，提示：下单结算需要登录
      // 3. 使用导航守卫，遇见需要登录的路由拦截，跳转到登录页面
      if (store.getters['cart/selectedList'].length === 0) {
        return Message({ text: '至少选中一件商品' })
      }
      if (!store.state.user.profile.token) {
        Confirm({ text: '下单结算需要登录，确认现在去登录吗？' }).then(() => {
          router.push('/member/checkout')
        }).catch(e => {})
      } else {
        router.push('/member/checkout')
      }
    }
    return {
      checkOne,
      checkAll,
      deleteCart,
      batchDeleteCart,
      updateCount,
      updateCartSku,
      checkout
    }
  }
}
</script>

<style scoped lang="less">
.tc {
  text-align: center;

  .xtx-numbox {
    margin: 0 auto;
    width: 120px;
  }
}

.red {
  color: @priceColor;
}

.green {
  color: @xtxColor
}

.f16 {
  font-size: 16px;
}

.goods {
  display: flex;
  align-items: center;

  img {
    width: 100px;
    height: 100px;
  }

  > div {
    width: 280px;
    font-size: 16px;
    padding-left: 10px;

    .attr {
      font-size: 14px;
      color: #999;
    }
  }
}

.action {
  display: flex;
  background: #fff;
  margin-top: 20px;
  height: 80px;
  align-items: center;
  font-size: 16px;
  justify-content: space-between;
  padding: 0 30px;

  .xtx-checkbox {
    color: #999;
  }

  .batch {
    a {
      margin-left: 20px;
    }
  }

  .red {
    font-size: 18px;
    margin-right: 20px;
    font-weight: bold;
  }
}

.tit {
  color: #666;
  font-size: 16px;
  font-weight: normal;
  line-height: 50px;
}

.xtx-cart-page {
  .cart {
    background: #fff;
    color: #666;

    table {
      border-spacing: 0;
      border-collapse: collapse;
      line-height: 24px;

      th, td {
        padding: 10px;
        border-bottom: 1px solid #f5f5f5;

        &:first-child {
          text-align: left;
          padding-left: 30px;
          color: #999;
        }
      }

      th {
        font-size: 16px;
        font-weight: normal;
        line-height: 50px;
      }
    }
  }
}
</style>
